CN114370040A - Novel integral prefabrication and hoisting process for herringbone frame of deepwater jacket - Google Patents
Novel integral prefabrication and hoisting process for herringbone frame of deepwater jacket Download PDFInfo
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- CN114370040A CN114370040A CN202111626436.8A CN202111626436A CN114370040A CN 114370040 A CN114370040 A CN 114370040A CN 202111626436 A CN202111626436 A CN 202111626436A CN 114370040 A CN114370040 A CN 114370040A
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- hoisting
- herringbone
- jacket
- herringbone frame
- horizontal sheet
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B17/00—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B17/00—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor
- E02B2017/0039—Methods for placing the offshore structure
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- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
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- Structural Engineering (AREA)
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Abstract
The invention discloses a novel integral prefabrication and hoisting process for a herringbone frame of a deepwater jacket, which comprises the following steps of: s1: placing a plurality of pad piers on land, and measuring and leveling; s2: laying a bottom horizontal sheet on the leveled pad pier, and fixing the bottom horizontal sheet and the pad pier; s3: fixing herringbone frames are respectively arranged on two sides of the fixed bottom horizontal sheet; s4: a fixed connecting pipe is arranged between the herringbone frames; s5: and integrally hoisting the structure. The invention transfers the welding work of the herringbone frame and the horizontal piece at the bottom to the ground, reduces the times of high-altitude hoisting, reduces the construction difficulty, reduces the construction risk, shortens the construction period, and is favorable for improving the market competitiveness overseas compared with the design and construction of the international jacket.
Description
Technical Field
The invention relates to the field of offshore oil engineering, in particular to a novel process for integrally prefabricating and hoisting a herringbone frame of a deepwater jacket.
Background
With the acceleration of oil and gas development and the extension to deep water and ultra-deep water, deep-water jacket is also rapidly developed, and the construction technology of the deep-water jacket is continuously improved. In the horizontal construction process of the deepwater jacket, a launching truss and the top surface of the jacket are connected through a herringbone structure to form a frame, which is commonly called a herringbone frame.
At present, the herringbone frame of the domestic jacket is prefabricated by a single piece and hoisted by a single piece, the herringbone frame is large in size, high in hoisting in place, large in hoisting difficulty and easy to shake, so that the herringbone frame is difficult to accurately place, a large amount of overhead welding operation is also required after the herringbone frame is hoisted in place, the construction difficulty is large, the period is long, the safety risk is high, and the herringbone frame is always a difficult problem in the construction process of the deepwater jacket.
Disclosure of Invention
The invention aims to solve the technical problem of providing a new process for prefabricating a herringbone frame and a bottom horizontal sheet of a deepwater jacket into a whole on the ground and then hoisting the herringbone frame and the bottom horizontal sheet.
In order to solve the technical problem, the invention provides a novel integral prefabrication and hoisting process for a herringbone frame of a deepwater jacket, which comprises the following steps of:
s1: placing a plurality of pad piers on land, and measuring and leveling;
s2: laying a bottom horizontal sheet on the leveled pad pier, and fixing the bottom horizontal sheet and the pad pier;
s3: fixing herringbone frames are respectively arranged on two sides of the fixed bottom horizontal sheet;
s4: a fixed connecting pipe is arranged between the herringbone frames;
s5: and integrally hoisting the structure.
According to a preferred embodiment of the present invention, in the step S1, the plurality of pad piers are arranged in parallel with each other from the inside to the outside in a matrix.
According to a preferred embodiment of the present invention, in step S2, after the bottom horizontal plate is laid, the bottom horizontal plate should be measured, adjusted and positioned, and after the bottom horizontal plate is qualified, the bottom horizontal plate and the pad pier are welded.
According to a preferred embodiment of the present invention, in step S3, the "herringbone" frame should be installed and fixed perpendicular to the plane of the bottom horizontal plate.
According to a preferred embodiment of the present invention, in the step S4, the connection pipe is installed between the tops of the "people" shape frames.
According to a preferred embodiment of the present invention, between the step S4 and the step S5, all structural appearance inspection and welding inspection should be performed.
According to a preferred embodiment of the present invention, in step S5, the integral hoisting is performed by connecting hoisting points on the herringbone frame.
According to a preferred embodiment of the present invention, a quadrilateral frame with support rods is connected between opposite corners of the horizontal plate, and the width of the first set of opposite sides of the horizontal plate is larger than that of the second set of opposite sides.
According to a preferred embodiment of the present invention, in the step S3, two sides of the horizontal sheet are a first set of opposite sides of the horizontal sheet.
The invention has the technical effects that:
1. the invention discloses a novel integral prefabrication and hoisting process for a herringbone frame of a deepwater jacket. The scheme realizes the beneficial effect of transferring the welding work of the herringbone frame and the high altitude of the horizontal sheet at the bottom to the ground.
2. The invention relates to a novel integral prefabrication and hoisting process for a herringbone frame of a deepwater jacket, which transfers the welding work of the herringbone frame and a bottom horizontal sheet to the ground, reduces the high-altitude hoisting times, reduces the construction difficulty, reduces the construction risk and shortens the construction period.
3. The process disclosed by the invention transfers the welding work of the herringbone frame and the horizontal piece at the bottom to the ground, not only solves the problem that the welding construction difficulty of the lacing wire and the saddle opening at the node position at high altitude is large, but also is beneficial to improving the market competitiveness in overseas with the design and construction of the international jacket.
Drawings
FIG. 1 is a schematic layout diagram of a novel integral prefabricated hoisting process pad pier of a deepwater jacket herringbone frame;
FIG. 2 is a schematic view showing the arrangement of bottom horizontal pieces of the new integral prefabrication and hoisting process of the deepwater jacket herringbone frame;
FIG. 3 is an installation schematic diagram of a new technology for integrally prefabricating and hoisting a herringbone frame of a deepwater jacket;
FIG. 4 is an installation schematic diagram of a connecting pipe of the new process for integrally prefabricating and hoisting a herringbone frame of a deepwater jacket;
fig. 5 is a structural schematic diagram of the integral hoisting of the novel integral prefabrication and hoisting process of the herringbone frame of the deepwater jacket.
Reference numerals: 1-pad pier; 2-bottom horizontal slice; 3- "herringbone frame; 4-connecting pipe; 5-a first set of opposite edges; 6-second set of opposite edges; 7-a support bar; 8-hoisting point.
Detailed Description
The present invention is further described with reference to the following drawings and specific examples so that those skilled in the art can better understand the present invention and can practice the present invention, but the examples are not intended to limit the present invention.
As shown in fig. 1-4, the present invention employs the following steps:
in the first step, as shown in fig. 1, on a flat prefabricated site, placing a cushion pier 1 required by prefabrication of a bottom horizontal sheet 2 according to a prefabrication scheme, and carrying out measurement leveling.
And secondly, prefabricating a bottom horizontal sheet 2 on a designated pad pier 1, measuring, adjusting and positioning, completing all welding according to the technical procedures of a welder after the appearance inspection is qualified, and reporting to the inspection after the welding to be qualified as shown in figure 2.
Thirdly, as shown in fig. 3, assembling and installing a herringbone frame 3 on one side of the bottom horizontal sheet 2, measuring, adjusting and positioning, completing all welding according to the technical procedures of welders after the appearance is qualified, and reporting that the welding is qualified after the welding; and (3) assembling and installing a herringbone frame 3 on the other side of the bottom horizontal sheet 2, measuring, adjusting and positioning, finishing all welding according to the technical rules of welders after the appearance inspection is qualified, and reporting and checking after welding to be qualified.
Fourthly, as shown in figure 4, the connection pipes 4 between the herringbone frames 3 are assembled, the herringbone frames 3 and the bottom horizontal sheet 2 are prefabricated into a whole, and the qualified inspection is reported after welding.
And fifthly, finishing the release of the prefabrication of the horizontal sheet 2 at the bottom of the whole jacket, and carrying out the next integral hoisting work.
And sixthly, carrying out integral hoisting.
As shown in fig. 2 and 5, a quadrilateral frame of support rods 7 is connected between opposite corners of the bottom horizontal plate 2, the width of the first group of opposite sides 5 of the bottom horizontal plate 2 is larger than that of the second group of opposite sides 6, and the herringbone frame is arranged on the first group of opposite sides 5 of the horizontal plate 2.
As shown in figure 5, the four tubes of the herringbone frame are provided with 4 hoisting points 8 for connection in integral hoisting.
According to the novel integral prefabrication and hoisting process for the ' herringbone ' frame 3 of the deepwater jacket, the novel integral prefabrication and hoisting process is adopted, the ' herringbone frame 3 and the bottom horizontal sheet 2 are prefabricated into a whole on the ground, and then the integral hoisting is carried out, so that the problems that the welding construction difficulty of tie bars and saddle openings at the nodes is high and the efficiency is low are solved, the problem that multiple times of high-altitude hoisting are caused in the traditional single-sheet prefabrication and hoisting is solved, the construction efficiency is improved, and the construction period of the jacket is shortened. Moreover, the construction process is connected with the design and construction of the jacket on the international world, and is beneficial to improving the receiving of offshore jacket projects of companies.
The above-mentioned embodiments are merely preferred embodiments for fully illustrating the present invention, and the scope of the present invention is not limited thereto. The equivalent substitution or change made by the technical personnel in the technical field on the basis of the invention is all within the protection scope of the invention. The protection scope of the invention is subject to the claims.
Claims (9)
1. A new integral prefabrication and hoisting process for a herringbone frame of a deepwater jacket is characterized by comprising the following steps of:
s1: placing a plurality of pad piers on land, and measuring and leveling;
s2: laying a bottom horizontal sheet on the leveled pad pier, and fixing the bottom horizontal sheet and the pad pier;
s3: fixing herringbone frames are respectively arranged on two sides of the fixed bottom horizontal sheet;
s4: a fixed connecting pipe is arranged between the herringbone frames;
s5: and integrally hoisting the structure.
2. The new process for integral prefabrication and hoisting of deep water jacket herringbone frame as claimed in claim 1, wherein in the step S1, the plurality of pad piers are arranged in parallel with each other from inside to outside to form a matrix.
3. The new process for integrally prefabricating and hoisting the herringbone frame of the deepwater jacket as claimed in claim 1, wherein in the step S2, after the bottom horizontal sheet is laid, measurement, adjustment and positioning are performed, and after the bottom horizontal sheet is qualified by inspection, welding between the bottom horizontal sheet and the pad pier is completed.
4. The new integral prefabrication and hoisting process of the deep water jacket herringbone frame as claimed in claim 1, wherein in the step S3, the herringbone frame is installed and fixed perpendicular to the plane of the bottom horizontal sheet.
5. The new integral prefabrication and hoisting process of the deepwater jacket herringbone frame as claimed in claim 1, wherein in the step S4, the connecting pipe is installed between the tops of the herringbone frame.
6. The new integral prefabrication and hoisting process of the deepwater jacket herringbone frame as claimed in claim 1, wherein all structural appearance inspection and welding inspection should be performed between the step S4 and the step S5.
7. The new process for integral prefabrication and hoisting of the jacket herringbone frame of the deep water as claimed in claim 1, wherein in the step S5, integral hoisting is completed by connecting hoisting points on the herringbone frame.
8. The new process for integrally prefabricating and hoisting the herringbone frame of the deepwater jacket as claimed in claim 1, wherein a quadrilateral frame of a support rod is connected between opposite corners of the horizontal sheet, and the width of a first group of opposite sides of the horizontal sheet is larger than that of a second group of opposite sides.
9. The new process for integrally prefabricating and hoisting a jacket for deep water according to claim 8, wherein in the step S3, two sides of the horizontal plate are a first group of opposite sides of the horizontal plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111626436.8A CN114370040A (en) | 2021-12-28 | 2021-12-28 | Novel integral prefabrication and hoisting process for herringbone frame of deepwater jacket |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111626436.8A CN114370040A (en) | 2021-12-28 | 2021-12-28 | Novel integral prefabrication and hoisting process for herringbone frame of deepwater jacket |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114370040A true CN114370040A (en) | 2022-04-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111626436.8A Pending CN114370040A (en) | 2021-12-28 | 2021-12-28 | Novel integral prefabrication and hoisting process for herringbone frame of deepwater jacket |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114370040A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107584252A (en) * | 2017-09-22 | 2018-01-16 | 中国海洋石油总公司 | The packaging technology of steel tube end part saddle port |
| CN109775632A (en) * | 2019-02-20 | 2019-05-21 | 海洋石油工程（青岛）有限公司 | The technique of jacket axis full wafer turnover hoisting |
-
2021
- 2021-12-28 CN CN202111626436.8A patent/CN114370040A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107584252A (en) * | 2017-09-22 | 2018-01-16 | 中国海洋石油总公司 | The packaging technology of steel tube end part saddle port |
| CN109775632A (en) * | 2019-02-20 | 2019-05-21 | 海洋石油工程（青岛）有限公司 | The technique of jacket axis full wafer turnover hoisting |
Non-Patent Citations (1)
| Title |
|---|
| 李林等: "番禺30-1深水导管架建造" * |
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